2017 Ram 2500 Bulb Sizes (Headlight, Tail, Fog)

Quick Reference

The 2017 Ram 2500 offers a range of lighting options, from traditional halogens to advanced projector-style headlights and even full LED systems on higher trims. Understanding the specific bulb sizes and types for your truck is crucial for proper maintenance and upgrades.

Headlights

For the 2017 Ram 2500, headlight configurations can vary significantly by trim level and optional packages. Most base models came equipped with H11 bulbs for the low beams and 9005 for the high beams, both halogen. However, many trims featured projector-style headlights, which commonly use H9 bulbs for both low and high beams. It’s important to physically check your headlight assembly or your owner's manual to determine the exact bulb type, as misidentifying can lead to purchasing the wrong bulbs.

On the higher trim levels, particularly those with premium lighting packages, the 2017 Ram 2500 could be optioned with full LED headlights. In these systems, the LED components are integrated into the headlight assembly and are not designed to be individually replaced like traditional bulbs. If an LED element fails in these units, the entire headlight assembly typically needs to be replaced, which can be a more significant expense.

Fog Lights

Fog lights on the 2017 Ram 2500 most commonly use H10 or 9145 halogen bulbs. These bulbs are often interchangeable, but it's always best to verify the specific bulb in your vehicle before purchasing replacements. Some aftermarket or premium trims might feature LED fog lights, which, similar to the main headlights, are usually integrated and not designed for bulb replacement.

Daytime Running Lights (DRL)

Daytime Running Lights (DRL) can vary. Some 2017 Ram 2500 models use the high beam bulbs at a reduced voltage for DRL functionality. Other configurations might use a dedicated bulb, often a 3157/7443 incandescent or an integrated LED strip depending on the trim and headlight option.

Turn Signals

The front turn signals on the 2017 Ram 2500 typically use 3157 incandescent bulbs. For the rear turn signals, 3057 incandescent bulbs are commonly used. These are dual-filament bulbs that often also serve as the tail lights or brake lights, depending on the wiring configuration.

Brake, Tail, and Reverse Lights

The brake lights and tail lights commonly share the same 3057 incandescent bulb in the rear lamp assembly. Similarly, the reverse lights generally use a 3057 incandescent bulb, ensuring bright illumination when backing up.

License Plate and Side Marker Lights

For the license plate illumination, you'll typically find 168 or 194 incandescent bulbs. Both are small wedge-base bulbs. Front and rear side marker lights also commonly use 194 incandescent bulbs, providing additional visibility for the truck from the sides.

Interior Lights

Inside the cab, the dome light often uses a 578 festoon-style incandescent bulb, a cylindrical bulb with contacts on both ends. The map lights, providing more focused illumination for the driver and passenger, usually take 921 incandescent bulbs. These interior bulbs are generally straightforward to replace and are a popular area for LED upgrades.

LED vs Halogen Upgrade Considerations

Upgrading from halogen to LED bulbs in your 2017 Ram 2500 can offer significant improvements in brightness, longevity, and a more modern aesthetic. However, there are several considerations to keep in mind:

• CANBUS Errors: Modern vehicles like the Ram 2500 use a CANBUS (Controller Area Network Bus) system to monitor electrical components. LED bulbs draw significantly less power than halogens. This difference can cause the CANBUS system to detect a